Broom trimmer



G. W. DUVALL AND N. H, BEEBE.

lBROOM TRINIIVIEFI.

APPLICATION FILED Amma, I9Is.

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GEORGE W. DUVALL AND NORMAN H. BERRE, or DAVENPORT, IOWA', v'AssrorNons 'ro MODERN BROMA-MACHINERY COMPANY, or DAVENPORT, IOWA, A CORPORATION 0F IOWA. l

BROOM TRIMMER.

Specification of Letters Patent. Patented May 1922.

Application med August as, 191s. serial No. 251,815.

To all whom 'it may concern Be it known that we, GEORGE W. DUVALL and NORMAN H. Binnen, citizens of the United States, residing at Davenport, in the county of Scott and State of Iowa, have invented certain new and useful Improvements in Broom Trimmers, of which the following is a specification.

This invention relates to rmachines designed to trim away the surplus fibre on the shoulder portion of metal clamp brooms.

In the accompanying` drawings:

Figure 1 is a view in perspective of the complete machine; f

Figure 2 shows in perspective the .sliding knife head;

Figure 3 illustrates one of the knives detached from the head;

Figure 4; shows the appearance of a metal clamp broom after the shoulder has been trimmed by this machine;

Figure 5 is a perspective view of the broom holding form;

Figure 6 is a front elevation of themain frame.

The main frame 1 is mounted on the combined column and base 2. The upper portion of the main frame 1 forms the back and side guides within which the sliding` knife head 3 is free to move vertically. The outer guide plates 4 and 5 are attached to frame 1 by bolts a, as shown. Cutters or knives 6 and 7 are attached to the head 3 by bolts as shown in Fig. 1. The knives are slotted as at o to receive the bolts. With this arrangement it is only necessary to loosen the bolts to remove the knives for sharpening.

Attention is called to the peculiar shape of the knives. They are curved to conform to the outline of the broom-clamp 8 and also pointed to cut both ways.

The broom shown in Fig. 1 illustrates the appearance of the broom shoulder before trimming. The broom shown in Fig. L1 shows the shoulder after trimming.

The point of the knife comes in contact with the broom corn or fibre at or near the side of the broom, and as the knife descends it cuts toward the handle or center of the broom. With this arrangement, a shearing cut is produced. The cutting edge of the knife is beveled on the convex side of same.

The head 3 is connected to the foot treadle 9 by the bar 10 pivoted at d. The downward movement vof the treadle draws the head 3 together with the knives down, thus trimming the upper half of the broom shoulder..

The broom is then turned over and the operation repeated, thus giving the shoulder the appearance of the one shown in Fig. .4. As soon as the foot is removed from the treadle, the spring 11 draws the treadle, rod and head to their extreme upward position.

A piece of yielding material 12, such as rubygrooved on the sides adjacent to the broom,

as shown at 16. The outer edges of the knives operate within the grooves 16.

No. 14 is a shield, and serves to prevent the operator getting his fingers caught between the top end of head 3 and frame 1.

We claim: y

1. The combination withv a main frame having a form thereon upon which the broom is adapted to rest, the form flanked by vertically extending lugs, said lugs having vertical grooves at their inner edges, of a head, knives adjustably connected therewith in position to trim the broom to conform substantially with the shape of the form, with their outer edges in position to move vertically in the grooves of the lugs, and means for reciprocating the head.

2. The combination with a frame, a form thereon adapted to receive the broom to be trimmed, the form fianked by upstanding lugs, of a reciprocating head, means for reciprocating the latter, pointed knives se cured to the head so that the points of the knives come in contact with the broom corn `100 supported by, the upstanding lugs.

3. The combination with 'a frame, av form thereon adapted to receive the broom to be trimmed, the form flanked by grooved upstanding lugs, of a reciprocating head, means 110 traveling in contact with, and being laterally 105 for reciprocating the latter7 pointed knives traveling in Contact with, and beingI laterally secured to the heed so that the points of the supported by7 the grooves of the upstending knives come in Contact with the broom oorn lugs. l0 or fibres at or near the sides ofthe broom, In testimony Whereofwve affix our signaand, as the knives travel, out toward the centures. Y

ter of the latter, thereby producing a shear- GEORGE WV. DUVALL.

ing out, and the outer edges of the knives iNORMAN H. BEEBE. 

